Compatible Replacement for Pitney Bowes Fluorescent Red 621-1 inkjet cartridge for DM500 and DM550.
Did not work in DM500 Series Machine
The cartridge was manufactured missing parts that were necessary for it to actually work. I would avoid buying this particular cartridge.
August 22, 2013
This Ink formula is perfect for mailing purposes and did not harmed the equipment.
October 10, 2012